A thick plume of steam and other volcanic gases rises above Nyiragongo Volcano in this natural-color satellite image collected on August 4, 2013. Nyiragongo is one of most active volcanoes in Africa’s Virunga volcanic field (along with nearby Nyamuragira). This image was acquired by the Advanced Land Imager (ALI) on Earth Observing-1 (EO-1).

NASA Earth Observatory image by Jesse Allen and Robert Simmon, using EO-1 ALI data from the NASA EO-1 team. Caption by Robert Simmon.